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Use of Nanofiltration and Demineralization of Industrial Effluents : Evaluation of the Feasibility of Reuse for Irrigation of Green Spaces
Summary
Researchers evaluated whether nanofiltration-treated industrial wastewater could be safely reused for irrigating green spaces. Most water quality parameters met regulatory standards, with only minor exceedances related to cation resin regeneration, suggesting feasibility with appropriate treatment measures.
Assessment of the applicability of neutralization station wastewater in combination with nanofiltration for watering green spaces. To achieve this objective, various analyses were carried out, including pH, conductivity, suspended solids, chlorides, nitrates, sulfates, bicarbonates, silica, total nitrogen, BOD5, COD and heavy metals. The results of our analyses showed that most of the parameters analyzed complied with the standards in force for water intended for the irrigation of green spaces. A few values slightly outside the recommended ranges were observed, mainly due to the cationic resin regeneration process. With regard to heavy metals, the levels found were all below the regulatory threshold values, indicating a low risk of contamination by these elements. On the basis of these results, a number of recommendations were made to demonstrate the feasibility of using discharges from the neutralization pit for watering green spaces, subject to the implementation of appropriate treatment and monitoring measures.
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